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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Susceptibility of clutches with Thermoid linings to sticking on stored car models.

Identifier  ExFiles\Box 130\3\  scan0118
Date  25th January 1940
  
1110

To Hd.{Mr Hayward/Mr Huddy} from Rm.{William Robotham - Chief Engineer}
c. C. W/S.

Rm.{William Robotham - Chief Engineer}1/MH.{M. Huckerby}25.1.40.

CLUTCHES ON CARS STORED.

With reference to Hd{Mr Hayward/Mr Huddy}/SD.10/MW.24.1.40, as we do not lay up cars for storage in the Experimental Dept. we have no experience of clutches which have become stuck. We can say, however, that all Phantom III's, Wraiths and 4¼-litre Bentleys are fitted with a Thermoid clutch lining material which may be susceptible to sticking. Clutch springs are not likely to become weak as a result of being jacked out, nor do we know of any disability which might arise from this procedure.

Rm.{William Robotham - Chief Engineer}
  
  


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